title: AlphaCor keratoprosthesis: postoperative development of six patients.
abstract: OBJECTIVE
  AlphaCor (Argus Biomedical Pty. Ltd., Perth, Australia) is an artificial, soft, one-piece keratoprosthesis (KPro) indicated for severe corneal conditions not treatable by a donor graft. To evaluate the efficacy and visual restoring of six patients with complete corneal opacification and deep neovascularizations treated with AlphaCor.
  
  
  METHODS
  A retrospective review of six patients with a history of corneal opacification treated with keratoprosthesis surgery. AlphaCor synthetic cornea was implanted into the corneal stroma. During the follow-up time, slit-lamp and ultrasound examinations, best corrected visual acuity (BCVA), and intraocular pressure measurements were performed.
  
  
  RESULTS
  Six eyes with corneal scarring and vascularizations in three to four quadrants of six patients to years of age underwent a keratoprosthesis procedure. The follow-up time was 13-36 months; mean 23 months. The operation procedure was not limited by severe complications. The preoperative BCVA was hand movement to light perception. The postoperative BCVA ranged between 20/200 and 80/100. Intraocular pressure was controlled in all cases. Three patients developed a melting of the anterior corneal lamella. The keratoprosthesis had to be explanted (15-34 months after implantation) and was replaced by a donor cornea.
  
  
  CONCLUSIONS
  Further evaluation is needed to evaluate the role of AlphaCor as a keratoprosthesis.
authors.affiliation: Eye Department of Schlosspark-Klinik, Berlin, Germany. so.holak@gmx.de
authors.forename: S A
authors.initials: SA
authors.lastname: Holak
authors.forename: H M
authors.initials: HM
authors.lastname: Holak
authors.forename: H
authors.initials: H
authors.lastname: Bleckmann
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001187:Artificial Organs; D003315:Cornea; D003316:Corneal Diseases / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D015948:Keratoplasty, Penetrating; D008297:Male; D008875:Middle Aged; D011102:Polyhydroxyethyl Methacrylate; D011183:Postoperative Complications; D019736:Prostheses and Implants; D019919:Prosthesis Implantation; D012086:Reoperation; D012189:Retrospective Studies; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology
chemical_list: D011102:Polyhydroxyethyl Methacrylate